019 100 points A catalyst works by 1 making the reaction more exothermic and

019 100 points a catalyst works by 1 making the

This preview shows page 6 out of 6 pages.

019 10.0 points A catalyst works by 1. making the reaction more exothermic and therefore more favorable. 2. increasing the average kinetic energy of the reactant molecules. 3. providing an alternate reaction pathway with a lower activation energy. correct 4. providing an alternate reaction pathway with a higher activation energy. Explanation: 020 10.0 points Consider the following potential energy dia- gram. a b d c e f A+B X+Y Reaction progress Potential energy If a catalyst were added, the height of which arrow would change? How would it change? 1. f ; the potential energy of the products would be lower. 2. b ; the activation energy would be lower. correct 3. a ; the activation energy would be lower. 4. a ; the potential energy of the reactants would be higher. 5. c ; the activation energy would be higher. Explanation:
Image of page 6

You've reached the end of your free preview.

Want to read all 6 pages?

  • Fall '07
  • Holcombe
  • Reaction, Chemical reaction, Rate equation, Reaction rate constant

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture